As you may know, the historic event I would like to talk about is China unity by King of Qin dynasty. It happened about 2200 years ago.
Before that event, the mainland of China are disintegrated, cut into several pieces and controlled by 6 small-seized countries separately. Countries are always to provoke the conflict and war and fight with each other so as to seize the territory, people and treasure. Definitely, for people, they are faced with wars, death and the unstable society.
Therefore, the political, strategic, revolutionary ruler standing in north area of China named Highness King in Qin dynasty planed to unite the whole China by a series of proposals. He practiced a set of strategies of revolution containing transportation building, writing in one language, communication with one currency in business or marketing. And meanwhile, he asked labors to construct the Great Wall more than 10 thousand miles in Qin dynasty for protecting domestic people and prevent intruders from outside of the wall.
In one word, his achievements are awarded by generations for thousand years and he is also a model role in Chinese classical history.